HP MLIB for PA-RISC and Itanium2 HP-UX Version 9.5 Release Note

HP MLIB for PA-RISC and Itanium® 2 HP-UX Version 9.5 Release Note

Compatibility Information

Compiling and Linking

This section outlines compiling and linking information for MLIB libraries.

When you use C language:

• C language codes that call Fortran 77 routines from the BLAS Standard, the sparse linear

equation system, or the sparse eigenvalue system, must explicitly link the ISAM (Indexed

Sequential Access Method) stubs library. For example,

% cc [options] file ... –Wl,–aarchive_shared,–L/opt/fortran90/lib/

libisamstub.a -lveclib -lcl -lm

This only applies if you are linking with the 32-bit PA VECLIB archive library.

HP MLIB 9.5 can be used as archive or shared libraries.

Application performance is sometimes better when archive libraries are used. However, if

small executable files are a necessity, shared libraries can be used. This section outlines

compiling and linking information for the archive and shared libraries in HP MLIB 9.5.

•Use the -aarchive_shared flag on your compiler command line to ensure that the

compiler links with archive libraries first. If the archive library is not available, then it

links with the shared library.

•Use the -ashared_archive flag to preferentially link with shared libraries. If you use

neither -aarchive_shared nor -ashared_archive, the linker defaults to shared

libraries.

The following command line examples demonstrate how to compile and link your programs

for use with MLIB libraries:

NOTE Unlike other MLIB libraries, executable files using the ScaLAPACK library

and the SuperLU_DIST library must be linked using mpif90, mpicc or mpiCC,

instead of f90, cc or aCC.

For PA-Based Systems

• To link a program that uses VECLIB, LAPACK, SOLVERS, or VMATH for use on the

same machine, use one of the following commands: